An automatic lifting aerial working platform special for corrugated steel web installation

Abstract

The application discloses a kind of automatic lifting high-altitude construction platforms special for corrugated steel web installation, it is related to the technical field of corrugated steel web continuous rigid frame installation, the platform includes: sprocket chain track frame telescopic base;Sprocket chain track frame is slid in sprocket chain track frame telescopic base interior;Power mechanism, power mechanism is placed in sprocket chain track frame telescopic base and sprocket chain track frame interior;Supporting rod is welded on the upper end of sprocket chain track frame, and its front end is in the form of hook;Wall support, the wall support is equipped with four, two two respectively set in the left and right sides of sprocket chain track frame and sprocket chain track frame telescopic base, and each wall support moves in left and right directions;Construction platform, the construction platform is connected with the power mechanism, and moves along the height direction of sprocket chain track frame;The effect that the application can be adjusted to lifting range according to the actual height of corrugated steel web, and is suitable for the construction of different models of corrugated steel web.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wave-shaped steel web continuous rigid frame installation, in particular to high-altitude welding, bolt tightening and wind and rain prevention during the welding process of the wave-shaped steel web segment-to-segment site connection. BACKGROUND

[0002] With the continuous rise of wave-shaped steel web continuous rigid frame bridges, the related steel structure manufacturing and site installation technology of wave-shaped steel webs has attracted widespread attention. When the wave-shaped steel web installation is constructed by the asynchronous method, segment-to-segment fillet vertical welds and bolt hole groups need to be welded and tightened without support in high altitude, and the molten pool should be protected from wind and rain during the welding of the fillet vertical welds, so as to avoid welding defects. In addition, the height of the wave-shaped steel web decreases from the O# block to the midspan, and in general, one construction platform cannot cover all the workstations at all wave-shaped steel web heights. Therefore, taking the under-construction "World's First 1800 Type Wave-Shaped Steel Web Continuous Rigid Frame - Feilong Bridge" as the technical background, the present application proposes an automatic lifting high-altitude work platform for wave-shaped steel web installation, which is used to solve the problems of the work platform required for welding and tightening the welds between segments during the wave-shaped steel web installation by the asynchronous method, and to solve the problem of wind and rain prevention during outdoor welding. Finally, the present application can not only be automatically lifted within a certain range, but also can adjust the lifting range to adapt to wave-shaped steel webs of all heights. SUMMARY

[0003] The present application aims to provide an automatic lifting high-altitude work platform for wave-shaped steel web installation. The chain length adjusting clamp can move bidirectionally or be completely fixed on the chain length adjusting channel. The chain length adjusting clamp moves together with the folded part of the chain. The chain length adjusting clamp moves upward or downward to elongate or shorten the effective part of the chain. The chain rail frame telescopic base is connected to the chain rail frame through the chain rail frame clamp. The chain rail frame can freely expand and be completely locked along the length direction of the chain rail frame telescopic base, thereby achieving the height adjustment of the overall structure of the present application. The lifting range can be adjusted according to the actual height of the wave-shaped steel web, and the present application is suitable for the work of wave-shaped steel webs of different types.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an automatic lifting high-altitude work platform for wave-shaped steel web installation, which comprises:

[0005] A chain rail frame telescopic base is provided for supporting and placing during work.

[0006] A sprocket chain track frame is slid inside a sprocket chain track frame telescopic base;

[0007] A power mechanism is arranged inside the sprocket chain track frame telescopic base and the sprocket chain track frame, and an external power system screw rod is connected to the upper end of the power mechanism, and a first gear is fixed inside the external power system screw rod;

[0008] A support rod is welded to the upper end of the sprocket chain track frame, and the front end of the support rod is in the shape of a hook;

[0009] Four wall supports are arranged, two of which are arranged on the left and right sides of the sprocket chain track frame and the sprocket chain track frame telescopic base respectively, and each wall support moves in the left-right direction;

[0010] A construction platform is connected to the power mechanism and moves along the height direction of the sprocket chain track frame.

[0011] Preferably, a sprocket chain track frame clamp is fixed to the sprocket chain track frame near the sliding-out position of the sprocket chain track frame telescopic base.

[0012] By connecting the sprocket chain track frame clamp and the sprocket chain track frame, the sprocket chain track frame telescopic base can freely extend and completely lock along the length direction of the sprocket chain track frame.

[0013] Preferably, a hook clamp and a support rod clamp are slidably connected to the support rod, and the hook clamp is arranged near the front end of the support rod.

[0014] Preferably, the power mechanism comprises a rotating shaft connected to the sprocket chain track frame and a cross-link rotating shaft, the rotating shaft and the cross-link rotating shaft are at the same height position, the cross-link rotating shaft is provided with three, and the other two cross-link rotating shafts are rotatably connected inside the sprocket chain track frame telescopic base, the two ends of the rotating shaft and the cross-link rotating shaft are fixedly connected with a third gear, the upper and lower four third gears on the same side are connected with a sprocket chain, a second gear is fixed in the middle of the rotating shaft, and the second gear and the first gear are connected through a transmission sprocket chain.

[0015] The third gears are arranged inside the sprocket chain track frame and the sprocket chain track frame telescopic base.

[0016] Preferably, the rotating shaft and the cross-link rotating shaft are provided with a ball guide sleeve assembly at the connection position of the two ends and the third gear.

[0017] Preferably, a fixed slide rod rotatingly connected inside the tooth chain track frame is arranged below the rotating shaft, a tooth chain length adjusting clamp sliding on the tooth chain track frame is arranged above the fixed slide rod, the tooth chain is wound between the tooth chain length adjusting clamp and the fixed slide rod, and a tooth chain length adjusting channel is arranged on the tooth chain track frame, and the tooth chain length adjusting clamp slides and adjusts in the tooth chain length adjusting channel.

[0018] According to the above scheme, three fixed slide rods are arranged, the tooth chain length adjusting clamp can move in the tooth chain length adjusting channel, the part of the tooth chain length adjusting clamp that is deep into the tooth chain track frame can hang the tooth chain, the part is provided with two hanging ends, the three fixed slide rods are used in cooperation, the fixed slide rods are fixed inside the tooth chain track frame, the tooth chain length adjusting clamp can move bidirectionally or be completely fixed on the tooth chain length adjusting channel, the tooth chain length adjusting clamp moves together with the tooth chain of the folding part, the tooth chain length adjusting clamp moves downward / upward, the effective part of the tooth chain is elongated / shortened, the moving and elongating / shortening ratio is 1:2n (n is the number of the hanging ends), the tooth chain length adjusting clamp needs to increase one fixed slide rod for each additional hanging end, meanwhile, the tooth chain length adjusting clamp can elongate more effective part of the tooth chain when moving downward, and then the overall height can be selected according to the actual working height by cooperating with the up-down adjustment of the tooth chain track frame.

[0019] Preferably, a tooth chain following structure is welded to the end of the support rod of the construction platform, and a construction platform guide wheel is welded away from the end of the support rod, and the tooth chain following structure and the construction platform guide wheel are connected to the tooth chain.

[0020] Preferably, a movable shielding track is welded to the construction platform, a movable shielding is slidingly connected inside the movable shielding track, a movable shielding sliding structure is fixed to the bottom of the movable shielding, the movable shielding slidingly moves in the movable shielding track through the movable shielding sliding structure, and a falling prevention clamp sliding on the tooth chain track frame is arranged below the top of the construction platform.

[0021] According to the above scheme, the movable shielding can be embedded in the movable shielding track to move bidirectionally, the movable shielding can move bidirectionally on the construction platform, and the movable shielding device can be adjusted to effectively seal the molten pool from the wind and rain during the welding process.

[0022] In the present application, for the movement of the construction platform, a lengthwise slot and a guide wheel track are arranged inside the tooth chain track frame for the movement of the construction platform, the welding fixed position of the construction platform and the tooth chain following structure is arranged in the lengthwise slot, the welding fixed position of the construction platform and the construction platform guide wheel is arranged in the guide wheel track, and the position of the construction platform is limited in combination with the falling prevention clamp.

[0023] Preferably, the wall-adhering support is provided with a wall-adhering support rail welded on the chain track frame or the chain track frame telescopic base at the end of the chain track frame or the chain track frame telescopic base, the wall-adhering support slides in the wall-adhering support rail, and a wall-adhering support bolt connection pair is threadedly connected to the wall-adhering support rail away from the wall-adhering support end, and the wall-adhering support is limited by the wall-adhering support bolt connection pair.

[0024] By adopting the above scheme, the position of the wall-adhering support can be conveniently adjusted. Since there are various models of corrugated steel web in China, such as 1200mm, 1400mm and 1800mm, the wall-adhering support can be selected to fall on the optimal support point wave crest through bidirectional position adjustment, and then combined with the aforementioned support rod, the wall-adhering support can be completely and stably hung on the corrugated steel web to play a role.

[0025] The beneficial effects of the present application are:

[0026] 1. The chain length adjusting clamp of the present application can move bidirectionally or be completely fixed on the chain length adjusting channel. The chain length adjusting clamp moves together with the folded part of the chain. The chain length adjusting clamp moves upward or downward to realize the elongation or shortening of the effective part of the chain. Meanwhile, the chain track frame telescopic base is connected with the chain track frame through the chain track frame clamp, and the chain track frame can freely extend and be completely locked along the length direction of the chain track frame telescopic base, thereby realizing the height adjustment of the overall structure of the present application, adjusting the lifting range according to the actual height of the corrugated steel web, and being suitable for the construction work of different models of corrugated steel web.

[0027] 2. The movable shield is provided, which can move bidirectionally along the movable shield rail to realize the bidirectional movement of the movable shield on the construction platform, thereby effectively closing the molten pool affected by wind and rain during the welding process.

[0028] 3. The left-right adjustable wall-adhering support is provided, which can be selected to fall on the optimal support point wave crest of different models of corrugated steel web through bidirectional position adjustment, and then combined with the aforementioned support rod to realize the completely stable hanging on the corrugated steel web to play a role.

[0029] 4. The external brake motor realizes the functions of automatic lifting and stalling of the construction platform. Before the lifting stops, the tightened anti-falling clamp can prevent the construction platform from falling, thereby increasing the safety reserve of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a plan view of the automatic lifting high-altitude construction platform for corrugated steel web installation.

[0031] Figure 2 It is a front elevation view of the automatic lifting high-altitude construction work platform special for corrugated steel web installation.

[0032] Figure 3 It is a side elevation view of the automatic lifting high-altitude construction work platform special for corrugated steel web installation.

[0033] Figure 4 It is a three-dimensional effect drawing of the automatic lifting high-altitude construction work platform special for corrugated steel web installation.

[0034] Figure 5 It is an internal three-dimensional structure drawing of the automatic lifting high-altitude construction work platform special for corrugated steel web installation.

[0035] Figure 6 It is a three-dimensional effect drawing of the construction platform part of the automatic lifting high-altitude construction work platform special for corrugated steel web installation.

[0036] Figure 7 It is a three-dimensional effect drawing of the rotating shaft and cross-link rotating shaft of the automatic lifting high-altitude construction work platform special for corrugated steel web installation.

[0037] Figure 8 It is a three-dimensional effect drawing of the automatic lifting high-altitude construction work platform special for corrugated steel web installation in actual working conditions.

[0038] In the figure: 1, external power system screw rod; 2, first gear; 3, transmission chain; 4, second gear; 5, rotating shaft; 6, cross-link rotating shaft; 7, movable shield; 8, movable shield track; 9, construction platform; 10, movable hook clamp; 11, support rod clamp; 12, chain length adjustment clamp; 13, anti-falling clamp; 14, chain track frame; 15, chain track frame telescopic base; 16, wall sticking support; 17, wall sticking support track; 18, wall sticking support bolt connection pair; 19, support rod; 20, chain track frame clamp; 21, chain length adjustment channel; 22, chain; 23, third gear; 24, fixed sliding rod; 25, chain following structure; 26, construction platform guide wheel; 27, movable shield sliding structure; 28, ball guide sleeve assembly. DETAILED DESCRIPTION

[0039] In order to further understand the invention content, characteristics and effects of the present application, the following examples are given, and the detailed description is as follows with reference to the drawings.

[0040] In this embodiment, the corrugated steel web with a wavelength of 1400 mm is taken as an example, and the power is provided by the external power system screw rod and the external gate motor. The clamp structure used is a threaded screw-in clamp structure purchased from the market.

[0041] Before use, the corrugated steel web height is adjusted according to the need for welding and screwing. The length of the sprocket chain is adjusted by the sprocket chain length adjustment clamp 12 and the sprocket chain track frame telescopic base 15. After determining the length that needs to be increased or decreased based on the original frame size, the sprocket chain length adjustment clamp 12 is moved down or up along the sprocket chain length adjustment channel 21. The ratio of the length that needs to be increased or decreased to the distance length of the sprocket chain length adjustment clamp 12 moving down or up is 1:2n (n is the number of sprocket chain length adjustment clamp hanging ends). After the adjustment is completed, the sprocket chain length adjustment clamp 12 is tightened. At the same time, the distance that the sprocket chain track frame 14 needs to be extended or shortened is adjusted according to the distance that the sprocket chain length adjustment clamp 12 moves down or up. The ratio of the distance that the sprocket chain length adjustment clamp 12 moves to the distance that the sprocket chain track frame telescopic base 15 moves is 1:n (n is the number of sprocket chain length adjustment clamp hanging ends). After the adjustment is completed, the sprocket chain track frame clamp 20 is tightened to completely fix the size of the invention.

[0042] The sprocket chain 22 is folded and wound on the sprocket chain length adjustment clamp 12 and the fixed slide rod 24. The sprocket chain length adjustment clamp 12 can move in the sprocket chain length adjustment channel 21. The part of the sprocket chain length adjustment clamp 12 that goes into the sprocket chain track frame 14 can hang the sprocket chain. This part is provided with two hanging ends and is used with three fixed slide rods 24. The fixed slide rod 24 is fixed inside the sprocket chain track frame 14. The sprocket chain length adjustment clamp 12 can move bidirectionally or be completely fixed on the sprocket chain length adjustment channel 21. The sprocket chain length adjustment clamp 12 moves together with the folded part of the sprocket chain 22. When the sprocket chain length adjustment clamp 12 moves down (up), the effective part of the sprocket chain 22 is elongated (shortened). The ratio of the movement and elongation (shortening) is 1:2n (n is the number of hanging ends). The sprocket chain length adjustment clamp 12 needs to increase one fixed slide rod 24 for each additional hanging end. At the same time, the sprocket chain length adjustment clamp 12 can elongate the effective part of the sprocket chain 22 more when it moves down, as shown in Figure 5 .

[0043] Further adjust the position of the wall-attached support 16. In this embodiment, the corrugated steel web with a wavelength of 1400 mm is used to adjust the position of the wall-attached support 16 on the wall-attached support track 17 to ensure that the wall-attached support can fall into the best support point, i.e. the wave crest of the corrugated steel web, through bidirectional position adjustment. After the adjustment is completed, the position of the wall-attached support 16 is locked by tightening the wall-attached support bolt connection pair 18.

[0044] After the adjustment is completed, the hook end of the support rod 19 is hooked to the corrugated steel web upper flange, and then the movable hook clamp 10 is completely locked, and the support rod clamp 11 is tightened along the support rod to the shear key of the corrugated steel web and is completely locked, and after the adjustment of the wall-attached support 16 before use, the present application can be completely and stably attached to the corrugated steel web that needs to be welded and screwed.

[0045] The external power system screw rod 1 is externally connected to the brake motor, and after the motor is opened, the construction platform 9 can realize automatic lifting and stopping at any height position for construction work.

[0046] Specifically, the external power system screw rod 1 needs to be externally connected to the brake motor as a power system, and the brake motor drives the transmission chain 3 by rotating the external power system screw rod 1, the first gear 2, and then the second gear 4, which in turn drives the rotation of all third gears 23 through the rotating shaft 5, and finally the two groups of tooth chains 22 on the third gear 23 are chain driven, and the present application must be used with the brake motor, and the brake motor should be able to completely lock the entire transmission chain 3 when it stops working, as shown in Figure 5 .

[0047] Among them, the tooth chain 22 is fixedly connected with the tooth chain following structure 25, and always follows the tooth chain 22 to move in the chain transmission direction, the wall-attached side of the construction platform 9 can be deeply welded and fixed inside the tooth chain following structure 25 through the through slot of the tooth chain rail frame 14, and the horizontal rod is provided with the anti-falling clamp 13 at both ends, the horizontal rod on the other side of the construction platform 9 is welded and connected with the construction platform guide wheel 26, the construction platform guide wheel 26 is placed in the guide wheel track of the tooth chain rail frame 14 and can move bidirectionally along the track, and finally the construction platform 9 can move bidirectionally along the tooth chain rail frame 14 while the tooth chain 22, and the tightening anti-falling clamp 13 can prevent the construction platform 9 from falling when it stops moving, as shown in Figure 5 and 6 .

[0048] During the operation, the movable shielding 7 can be used for wind and rain prevention, as shown in Figure 6 , the shielding rail 8 can be freely adjusted to move bidirectionally according to the distance from the construction platform 9 to the operation position, so that the movable shielding rail 8 can completely shield the position that needs to be welded, and thus the actual corrugated steel web structure size can be attached, the shielding device can be adjusted, and the molten pool can be effectively shielded from the influence of wind and rain during the welding process.

[0049] In particular, the dimensions of each part are designed according to the self-weight, bearing capacity, and actual wave height, wavelength, and web height of all corrugated steel webs used for construction, and the principle is to ensure that the invention has sufficient rigidity, strength, and stability to function.

[0050] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A special automatic lifting aerial work platform for corrugated steel web installation, characterized in that, The corrugated steel web installation special automatic lifting aerial working platform comprises: The sprocket chain track frame telescopic base (15) is supported and placed during operation; The sprocket chain track frame (14) slides inside the sprocket chain track frame telescopic base (15); The power mechanism is arranged inside the sprocket chain track frame telescopic base (15) and the sprocket chain track frame (14), and the upper end of the power mechanism is connected with an external power system lead screw (1), the first gear (2) is fixed inside the external power system lead screw (1); The support rod (19) is welded on the upper end of the sprocket chain track frame (14), and the front end is in the form of a hook; The wall-attached supports (16) are provided in four, and two are arranged on the two sides of the sprocket chain track frame (14) and the sprocket chain track frame telescopic base (15) respectively, and each wall-attached support (16) moves in the left-right direction. The construction platform (9) is connected with the power mechanism and moves along the height direction of the sprocket chain track frame (14); The power mechanism comprises rotating shafts (5) and cross-link rotating shafts (6) which are rotatably connected to the sprocket chain track frame (14), the rotating shafts (5) and the cross-link rotating shafts (6) are at the same height, the cross-link rotating shafts (6) are provided in three, the other two cross-link rotating shafts (6) are rotatably connected to the telescopic base inside the sprocket chain track frame (14), the two ends of the rotating shafts (5) and the cross-link rotating shafts (6) are fixedly connected with third gears (23), the upper and lower four third gears (23) on the same side are connected with a sprocket chain (22), the middle part of the rotating shaft (5) is further fixed with a second gear (4), and the second gear (4) and the first gear (2) are connected through a transmission sprocket chain (3); A fixed slide rod (24) rotatably connected to the inside of the sprocket chain track frame (14) is further arranged below the rotating shaft (5), a sprocket chain length adjusting clamp (12) sliding on the sprocket chain track frame (14) is arranged above the fixed slide rod (24), the sprocket chain (22) is wound between the sprocket chain length adjusting clamp (12) and the fixed slide rod (24), and a sprocket chain length adjusting channel (21) is formed in the sprocket chain track frame (14) corresponding to the sprocket chain length adjusting clamp (12) for sliding adjustment; The construction platform (9) is welded with a sprocket chain following structure (25) at the end of the support rod (19), and a construction platform (9) guide wheel is welded away from the end of the support rod (19), and the sprocket chain following structure (25) and the construction platform (9) guide wheel are connected to the sprocket chain (22).

2. A specially designed automatic lifting aerial work platform for installation of corrugated steel web, according to claim 1, characterized in that, The sprocket chain track frame (14) is fixed with a sprocket chain track frame clamp (20) near the sliding-out position of the sprocket chain track frame telescopic base (15).

3. A specially designed automatic lifting aerial work platform for installation of corrugated steel web, according to claim 1, characterized in that, The support rod (19) is slidably connected with a hook clamp (10) and a support rod clamp (11), and the hook clamp (10) is arranged near the front end of the support rod (19).

4. A specially designed automatic lifting aerial work platform for installation of corrugated steel web, according to claim 1, characterized in that, The construction platform (9) is welded with a movable shielding track (8), and the movable shielding track (8) is internally connected with a movable shielding (7) through a movable shielding sliding structure (27).

5. A specially designed automatic lifting aerial work platform for installation of corrugated steel web, according to claim 1, characterized in that, The wall-adhesion support (16) is provided with a wall-adhesion support (16) track welded on the sprocket chain track frame (14) or the sprocket chain track frame telescopic base (15) at the end of the sprocket chain track frame (14) or the sprocket chain track frame telescopic base (15), the wall-adhesion support (16) is slidably arranged in the wall-adhesion support track (17), and the wall-adhesion support track (17) is threadedly connected with a wall-adhesion support bolt connection pair (18) away from the end of the wall-adhesion support (16), and the wall-adhesion support (16) and the wall-adhesion support track (17) are limited by the wall-adhesion support bolt connection pair (18).

6. A specially designed automatic lifting aerial work platform for installation of corrugated steel web, according to claim 1, characterized in that, The shaft (5) and the transverse connecting shaft (6) are both provided with a ball guide sleeve assembly (28) at the connection position of the third gear (23).

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